On BBC R4's PM programme, I've just heard that the dreaded Cane Toads in Australia have taken an evolutionary... er... leap. Apparently, they've evolved to do what no other toads can do (news to me, though) which is to hop in a straight line rather than a zig-zag. This allows them to speed up their invasion of the continent to 40km/year and - I didn't catch the details, maybe it's a concurrent development - scoff a lot more efficiently or effectively too.What drastic decay of their DNA could have led to such rapidly increasing success? Is it simply the Devil at work? Or maybe a punctuation of their equilibrium?